Fischertechnik Robot Lock Picker




How to create a programmable fischertechnik robotic lock picker!

I play with different educational manipulatives for a living. (Visit Over the years I have built many robots!

I recently came across a great description of a device that would run through all the different possible combinations for a Master Combination Lock. Having a number of these locks without a combination, I thought this would be a great robotic project for this competition.

Unfortunately, I have not had the opportunity to render the step-by-step directions, so for now you will have to be content with some digital photographs.

UPDATE: I have posted pictures of an updated model using the PCS BRAIN.

A great analysis on finding a Master Combination Lock combination:

I want to cite Neil Fraser's locraker as the source of inspiration!
(This link was not working when I checked).

Note: I recommend Michael Sameks ft Designer to create CAD images of fischertechnik models.

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Step 1: Description of Robot

According to Jim Loy, a generic dial lock has a certain amount of slop in the combination. The combination can be discovered by trying every combination in pattern in about 200 minutes. (In his test, he solved a lock in about an hour. In Neil's project, it took about 30 minutes.).

In my first version of the Lock Picker, I used a pile of fischertechnik elements including two 9 v motors, a PCS Programmable Brick with the PCS Robotics Contoller, and a simple touch sensor.

Step 2: Have Fun!

Have fun!

See my instructable on going to Morshausen!
( )

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    11 Discussions


    6 years ago on Introduction

    Is the program you used something you could share?

    chuck norris

    10 years ago on Introduction

    I do congradulate you on creating this device, ftking_83702. However, this is not an instructable. For example, If I may, "How to create a programmable fischertechnik robotic lock picker!"-you "Unfortunately, I have not had the opportunity to render the step-by-step directions..."-you, nine lines later. I understand what it is like to have no free time, however, if you are going to make an instructable, then make an instructable. I am not trying to be a mordant jerk, I'm just offering you some critisizm so that the next instructables you make will be better than this.

    1 reply

    11 years ago on Introduction

    I would save the time and open a can beverage. While you are drinking your favorite drink, search YouTube and see how to cut the can down and use it as a lock pick. This trick works great and I showed my son, who now uses it at school and changes the locks on his shooting club's team mates lockers. Revenge is sweet sorrow.

    1 reply

    11 years ago on Introduction

    Im sorry but this tells me nothing about how to build it just that you can find a combo in 200 minutes and u like Morshauen. Please add the part where you tell us how to actually make it. I want to know.

    1 reply

    Reply 11 years ago on Introduction

    Howdy. Thanks for the interest. I will post step-by-step instructions and a video as soon as possible. Again, I appreciate the feedback.